The hacks are pretty hardcore, and demand not just a jailbroken iPhone, but a working knowledge of the handset's operating system internals. Basically, I wouldn't recommend anyone who enjoys having a not-bricked iPhone try either one. Anyway! The former comes by way of the Hackint0sh forums, courtesy of user Whiterat:

1. Backup original CommCenter (goes without saying...)
2. Replace CommCenter in: /System/Library/PrivateFrameworks/CoreTelephony.framework/Support/ with a patched one.
3. Chmod the new CommCenter to 755
4. Open /System/Library/CoreServices/SpringBoard.app/M68AP.plist and insert a true boolean value for "mms" under capabilities

and the latter, from the Dev Team Wiki, step-ified by The Beat Mix (the instructions are too long to include here; just check them out at the link).

If they're soooooo dangerous, then why even mention them? Because in their respective forums, the chatter around the hacks is that they'll make their way to the Cydia jailbreak app store before too long, and both be installable with little more than a tap. [MuscleNerd's Twitter via 9to5Mac]

Other than this, there are a number of fixes that you can head over to the developer site to check out.

UPDATE: Reports are coming in that, predictably, some of the simpler tethering tricks no longer work.

UPDATE 2: A few more features have come to light, including new accessibility options (VoiceOver and high contrast mode can be toggled with three clicks on the home button), as well as new video saving and editing buttons. [iPhone Dev]

http://help.benm.at/help.php

Then scroll down to the Tethering & Internet Settings, then choosing your country and provider. This works for both AT&T and T-Mobile, and will let you install the appropriate configuration.

Now go to your settings and enable tethering. Check the video walkthrough above to help you configure tethering.

We've been testing this for about a day and it's been working quite well. Just be careful though, that AT&T doesn't officially sponsor this and might charge you extra for using tethering while you're not supposed to. So, keep an eye out so you're not shafted at the end of the month.

And if this disables visual voicemail on your phone, just go and reset your network settings, and it should be fixed. If that doesn't work, try updating your phone with an older version of the AT&T carrier settings.

The method is an update of what we showed before, but with a method to get MMS and Visual Voicemail working.

The guys at winandmac say they've noticed a change in the YouTube app's stream handling. Now, instead of defaulting to the low-res OTA version of a YouTube video when connected via 3G, the app plays the high-res version previously reserved for Wi-Fi.

Meanwhile, in our comments and over at the iPhone Blog, AT&T-bound Beta 5 users are reporting that the simple MMS stopgap hack is no longer possible.

It's only been few hours since Beta 5 burst forth into this world, naked and screaming, so more changes are bound to bubble up to the surface—there are already rumblings that new anti-tethering measures have been implemented, but this hasn't been confirmed (and may have more to do with new security features in iTunes 8.2 than iPhone OS). [winandmac and the iPhone Blog]

Q: Where do you stand on tethering?
A: There's two pieces needed to support that: client side and working with carriers. We're absolutely supporting tethering in the client side in iPhone 3.0, but we're working with carriers around the world to see when they can add tethering support on their networks. But we are building that support into iPhone 3.0.

Looks like jailbroken tethering will live on, for now.

[iPhone 3.0 OS Guide: Everything You Need to Know]

They also explain that the connection will simply be cut if you go over 5GB, preventing potentially huge overage charges (BlackBerry users can opt to pay $0.00048/KB for extra bandwidth, which would make sense on the iPhone, too). And at least the first time you begin tethering, the transaction will take place through iTunes.

As for a potential launch date, there's no word at this time. [MacBlogz]

Regardless of how many billions of dollars AT&T pours into their 3G network, it hasn’t been stable enough to handle all you iPhone users

They added that AT&T Blackberry tethering is a different beast, as Blackberry users haven't caused nearly the strain of iPhone users on AT&T's 3G network.

AT&T, on the other hand, routinely insists that they leave all service features up to the hardware manufacturers.

Given that AT&T has has taken plenty of bumps on the chin regarding iPhone data, and given that iPhones have sold even better this year than projected, it's not such a stretch to believe that AT&T might be playing it safe for the time being and handling their 3G network with care. [MacBlogz]

Hanging out at sites like Giz may have instilled in you an insatiable, pocket-emptying gadget habit. But now we're entering a new era—the old guys on the TV are saying that soon we may not even have pockets, let alone money for them. Don't panic though: You've probably got a wealth of gadgetry sitting underutilized in your living rooms, closets and basements, just waiting to be given powerful new (not exactly authorized) features. For free.

I've collected the best firmware replacements, software mods and homebrew hacks from the DMCA-flouting, EULA-hating frontiers of gadgetland that'll breathe new life into your stable of hardware and maybe—just maybe—let you feel that lusty new-gadget rush again.

Turn Your Xbox, Old PC or Apple TV into a Genuine Media Center

Xbox Media Center is about as refined as an unauthorized hack can get, playing back virtually any audio and video format, running a bevy of console emulators and still playing your Xbox games. To be honest, this should almost be viewed as a natural update for every Xbox, which at its core is a slow but functional PC with an easy TV connection. (Any actual PCs you have lying around can run a PC-ported version of XBMC.)

Boxee is a very slick fork of the XBMC project for Mac, and it's available for Apple TV. As shipped, the Apple TV works fine within the closed iTunes ecosystem, but Boxee's support for virtually every video codec and free online video like YouTube, CNN, BBC, and Revision3 will suit your new, more destitute lifestyle a bit better.

Difficulty: Easy to Moderate. Installation is pretty straightforward in most cases, with simple Boxee and XBMC setup programs available for Windows, Mac and Linux. Before you load XBMC, though, you have to mod your Xbox with one of these methods, many of which require a specific game. After that it's all install wizards and lollipops.

Installing anything on the locked-down Apple TV used to take some serious finagling, but there are now tools that will create an automated Boxee installer on a flash drive. Just plug the drive in, restart and you're good to go.

XBMC Online Manual

Boxee

Make Over Your iPod, Archos, iRiver or Sandisk with Rockbox

It's hard to look at the current generation of media players and not admire their diverse capabilities and extensible software platforms. That's not to say that your 5th-gen iPod doesn't play back music perfectly well, or that your iRiver H10 still isn't a kickass media player, but they do feel a bit dated. Rockbox replaces your MP3 player's operating system with something more substantial, effectively making it a completely new device. You get endless codec support, advanced audio options, dozens of games, useful apps like a calculator and a text editor, plus you can choose from tons of different interface skins for a unique look and feel. Rockbox's tweaking possibilities mean you will earn admiring "what is that?" questions from friends, and it won't cost you a thing. If your player isn't supported yet just hold on—everything from the Zen Vision:M to the Toshiba Gigabeat S has a fairly active dev team.

Difficulty: Easy. Rockbox has an automated tool called the Rockbox Utility available for Windows, Mac and Linux. It does the work for you. Even better, it often automatically configures your player to dual boot with its original OS.

Rockbox Official Site

Convert Your PC or Notebook Into A Much More Expensive Mac

It's undeniable that Macs are too expensive. For many, they are considered a luxury item whose added cost doesn't justify the benefit. Luckily Apple's switch to an Intel platform opened up a world of unauthorized OS X installations which can turn your existing PC into a powerhouse Mac Pro workstation, or morph your MSI Wind or Asus EeePC into the Mac netbook that should be in their goddamn product line anyway. Check the hardware compatibility list to see if your PC is eligible for the upgrade.

Difficulty: Moderate to Hard. If you're not morally opposed to downloading iATKOS and Kalyway, which are pre-patched Leopard install DVDs (this is bit torrent territory), then the process is much like installing any other OS. If you insist on building your own patched install from a DVD you own, then, well, good luck. Always check hardware lists first, though, because driver support is everything.

OSX86 Project Page

Flash Your Crappy Router Into a Top-Line Piece of Hardware

The DD-WRT project exists for a simple reason: Most routers are physically very similar, but are priced differently because of functionality derived from software. The DD-WRT firmware unlocks the potential of the most basic routers out there—too many to name but damn if yours isn't on the list. As it turns out, your budget model is kind of impressive: Program-specific traffic throttling, professional level wireless security and radical signal boosting are just a few of the dozens of new features that can be enabled.

Difficulty: Easy. If you can't manage this one, then you don't deserve a router—installation just takes a few clicks on the device's default configuration pages. A word of caution, though: Make sure your router configuration page is totally compatible with your browser before the operation, as some choke on Firefox and can botch firmware upgrades. Stick to IE if you have the choice.

DD-WRT Project Page

Download Updated Maps For Your Old GPS

I'm referring of course to capital 'D' downloading here, mainly because at the moment GPS map updates are a racket. You could spend hundreds of dollars on map data that is freely available on Google Maps, Microsoft Live and MapQuest, among others, or you can just, you know, not. Map packs for Garmin, TomTom and Magellan units are floating around torrent sites and usually don't require much more than a simple CD image mount and run routine to set up. (Guilty conscience sold separately.)

Difficulty: Easy to Moderate. If you're just running a copy of a CD, then you'll be able to use the installation wizards. Some more involved methods for Windows CE-based devices require some SSH file transfers, but these are relatively rare.

Jailbreak Your iPhone for Wi-Fi Internet Tethering

Two internet plans are enough, but to sign on to a mobile internet contract when you've already got unlimited iPhone data feels kind of stupid. Jailbreaking your iPhone is now about as easy as performing a firmware upgrade, and there are actually multiple tethering apps. PDANet and iPhoneModem both work a treat, but keep in mind that excessive usage could draw AT&T's attention and ire: Tethering is not allowed on the data plan, even though it works fine. Both apps are available in Cydia, where you can also find a limited assortment of other apps that don't have a place in the app store.

Difficulty: Moderate. Jailbreaking can be managed through the Dev Team's fantastic Quickpwn tool, but it does take a few minutes and can go wrong if instructions aren't followed closely. After jailbreak, Cydia and Installer fill the role of the gray-market app store, functioning as simple package managers that are arguably as polished as their more legitimate younger brother.

PDANet and iPhoneModem take different approaches to tethering, but neither requires more networking expertise than it would take to, say, set up a router.

iPhone Jailbreak

PDANet

iPhoneModem

Turn Your Wii Into a Free Emulation Machine

It's more than a little infuriating to have to repurchase your childhood library of console games from the Virtual Console, especially when free PC emulators and accompanying ROMs abound on the old intertubes. All you need is a copy of Legend of Zelda: The Twilight Princess, an SD card and an SD reader and you're ready to install A Boy and His Blob: Trouble on Blobolonia, which is pretty much all anyone has ever really needed since this whole "Video Gaming Television Machine" thing got under way in the first place. Throw in extended media playback and some helpful widgets for an extra value-add.

Difficulty: Moderate. This is one of the only hacks here that needs additional hardware to work, even if it's basic. The good news is that once you find a copy of Zelda and load up your SD card, the process pretty much takes care of itself. Further app installs are taken care of through a intuitive dedicated channel.

WiiBrew WIki

A great resource for similar projects is our industrious sister site Lifehacker, where you can find a veritable treasure trove of tutorials and tricks. Have you postponed any gadget purchases until you're sure your bank is solvent? Have any other budget hardware resurrection techniques that we missed? Let us know in the comments.

AT&T offers data plans for BlackBerry that include tethering for an additional $30 per month (a total of $60 per month for the BlackBerry+tethering plan).

It seems ludicrous that the same thing is not offered with the iPhone. I understand the desire to prevent tethering with the current data plan, but I am willing to pay more money to allow tethering! With such an advanced device, why can I not do so?

From "Steve" to our reader:

We agree, and are discussing it with ATT.

Steve

Sent from my iPhone

We're not sure—that "Sent from my iPhone" kicker either makes this email completely legitimate or illegitimate, but it's not a bad little rumor to start your holiday weekend early.

So would you pay extra to tether your laptop to your iPhone? [Image via Lifehacker]